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Finding the Fourth Proportional to 279,305.44, 385,443.34 and 151,981.94

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Solution

The fourth proportional to 279,305.44, 385,443.34 and 151,981.94 is: 209,736.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,305.44 : 385,443.34 = 151,981.94 : x
  2. Step 2: Convert to fraction form
    279,305.44/385,443.34 = 151,981.94/x
  3. Step 3: Cross multiply
    279,305.44x = 385,443.34 × 151,981.94
  4. Step 4: Simplify right side
    279,305.44x = 58,580,427,156.93
  5. Step 5: Solve for x
    x = 58,580,427,156.93/279,305.44
  6. Step 6: Final answer
    x = 209,736.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.